It's important to cultivate forgiveness by developing compassion for the offender, reflect on whether their act was due to malicious intent, or whether it was caused by challenging circumstances in the offender's life.
Obviously very offensive and people got very upset for it and Zuckerberg was hauled in front of the disciplinary board at Harvard and - and admonished for this.
When politicians make mistakes they are expected to apologise, and failing to say sorry is a faux pas - a remark made in a social situation that causes embarrassment or offence.